The State and the Variations of Greenhouse Gases in the Atmosphere

This document is based on the information that is included in the annual WMO Greenhouse Gas Bulletins produced during the last 14 years on the basis of the long-term high-quality observations undertaken by the global network and taking into consideration the recent advances in greenhouse gas research. The information is prepared by the Scientific Advisory Group on Greenhouse Gases under the Global Atmosphere Watch (GAW) Programme of WMO.